Decorator Kata

DecoratorKata.cs

using System;

namespace DecoratorKata
{
    class Program
    {
        static void Main(string[] args)
        {
            var service = new RoundBracketsDecorator(
                                new SquareBracketsDecorator(
                                    new RoundBracketsDecorator(new ConcreteImplementation()
                            )));


            Console.WriteLine(service.GiveMeData());

            Console.ReadLine();
        }
    }

    public interface IService
    {
        string GiveMeData();
    }

    public class ConcreteImplementation : IService
    {
        public string GiveMeData()
        {
            return "Hello world";
        }
    }

    public class RoundBracketsDecorator : IService
    {
        private readonly IService decorated;

        public RoundBracketsDecorator(IService decorated)
        {
            this.decorated = decorated;
        }

        public string GiveMeData()
        {
            return "(" + decorated.GiveMeData() + ")";
        }
    }

    public class SquareBracketsDecorator : IService
    {
        private readonly IService decorated;

        public SquareBracketsDecorator(IService decorated)
        {
            this.decorated = decorated;
        }

        public string GiveMeData()
        {
            return "[" + decorated.GiveMeData() + "]";
        }
    }
}